Patrick Jane and the CBI team investigate the death of a mathematical genius by a gun-wielding clown.

original airdate- May 6,2010 rating-14.85 million

song--The Main Title Theme--(Extended Version) by Blake Neely

Trivia: Change the numbers into the corresponding position of the alphabet and you come up with R - 18, E - 5, D - 4. RED.

Locker key number 42 is a reference to Douglas Adams' book/radio show "Hitchhikers Guide to the Galaxy" - the answer to life, the universe, and everything... a fitting repository for a "universal hack".

Lucy Davis is actually married to Owain Yeoman who plays Wayne Rigsby.

Now You Know--Every episode title contains a reference to the color red, like "Paint it Red", "Scarlett Fever", "Russet Potatoes", or "Bloodshot". This is because Patrick Jane's nemesis is the ingenious sadistic serial killer, Red John.